Chub · Leuciscus cephalus

Chub in the Sandon Brook (Main Reaches)

Largest measured chub: 50 cm

The largest chub measured in Environment Agency surveys of the Sandon Brook (Main Reaches) was 50 cm, recorded at Boreham Bridge (Sandon Brook) on 6 May 1992.

Across 1,220 measured chub, the median measured length was 25.9 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Sandon Brook (Main Reaches).

See chub records across England →

Most recent observation9 May 2025Boreham Bridge (Sandon Brook) · 32 fish

Largest measured chub: 50 cm
Median length: 25.9 cm
Fish measured: 1,220
Survey locations: 4

Individual EA measurements

Largest measured chub

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

Length	Survey date	Survey location	Survey ID
50 cm	6 May 1992	Boreham Bridge (Sandon Brook)	14490
48.7 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398
47.8 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398
47.5 cm	20 May 1998	Boreham Bridge (Sandon Brook)	14498
47.5 cm	28 Apr 1995	Boreham Bridge (Sandon Brook)	14494
47.2 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398
46.3 cm	4 Jun 2001	Boreham Bridge (Sandon Brook)	15597
46.2 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398
46.2 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398
46 cm	8 May 2007	Boreham Bridge (Sandon Brook)	105398

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where chub were found

Each point marks a survey location with at least one chub record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyed	First recorded	Last recorded	Visits finding chub
Boreham Bridge (Sandon Brook)	9 May 1986	9 May 2025	9
Graces Walk	15 May 1986	8 May 2025	10
Baddow Fruit Farm	13 May 1986	1 Jun 2001	6
Danbury Road FGS	16 May 1986	29 May 2001	6

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1986–2025

Survey records by year

Each bar shows how many survey visits recorded chub that year.

486

087

088

489

090

091

492

093

094

495

096

097

498

099

000

401

002

003

004

005

006

207

008

009

010

011

012

213

014

015

016

017

018

119

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 1,220 measured fish were spread across different length ranges.

Smallest: 4.1 cm
Lower quarter: 14.6 cm
Median: 26 cm
Upper quarter: 33.4 cm
Largest: 50 cm

0–99 mm

100–199 mm

399

200–299 mm

277

300–399 mm

417

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Sandon Brook (Main Reaches)

Compare other species with enough survey and measurement data for a detailed page.

European eel Roach Dace Pike Gudgeon Minnow

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →